GUITasks.java Source code

Introduction

Here is the source code for GUITasks.java

Source

/*
GNU LESSER GENERAL PUBLIC LICENSE
Copyright (C) 2006 The Lobo Project
    
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
    
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
Lesser General Public License for more details.
    
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
    
Contact info: lobochief@users.sourceforge.net
*/

import java.awt.*;

public class GUITasks {
    public static Frame getTopFrame() {
        Frame[] frames = Frame.getFrames();
        for (int i = 0; i < frames.length; i++) {
            if (frames[i].getFocusOwner() != null) {
                return frames[i];
            }
        }
        if (frames.length > 0) {
            return frames[0];
        }
        return null;
    }

    public static void drawDashed(Graphics g, int x1, int y1, int x2, int y2, int dashSize, int gapSize) {
        if (x2 < x1) {
            int temp = x1;
            x1 = x2;
            x2 = temp;
        }
        if (y2 < y1) {
            int temp = y1;
            y1 = y2;
            y2 = temp;
        }
        int totalDash = dashSize + gapSize;
        if (y1 == y2) {
            int virtualStartX = (x1 / totalDash) * totalDash;
            for (int x = virtualStartX; x < x2; x += totalDash) {
                int topX = x + dashSize;
                if (topX > x2) {
                    topX = x2;
                }
                int firstX = x;
                if (firstX < x1) {
                    firstX = x1;
                }
                if (firstX < topX) {
                    g.drawLine(firstX, y1, topX, y1);
                }
            }
        } else if (x1 == x2) {
            int virtualStartY = (y1 / totalDash) * totalDash;
            for (int y = virtualStartY; y < y2; y += totalDash) {
                int topY = y + dashSize;
                if (topY > y2) {
                    topY = y2;
                }
                int firstY = y;
                if (firstY < y1) {
                    firstY = y1;
                }
                if (firstY < topY) {
                    g.drawLine(x1, firstY, x1, topY);
                }
            }
        } else {
            // Not supported
            g.drawLine(x1, y1, x2, y2);
        }
    }
}